Specifications
Product Family
Cisco Nexus 9364E series 800G data centre switches
N9364E-SG2-O
64 x 800G OSFP ports, 2RU fixed switch
N9364E-SG2-Q
64 x 800G QSFP-DD ports, 2RU fixed switch
N9364E-SP2R
3RU 800G spine platform with 64 ports, Cisco Silicon One P200 ASIC
Switch Bandwidth
102.4 Tbps of switch bandwidth on the N9364E-SG2
Port Speeds
800G, 400G, 200G and 100G with 2x400G and 8x100G breakout
Packet Buffer
256 MB fully shared on-die buffer
ASIC
Cisco Silicon One programmable forwarding silicon
Forwarding Tables
Up to 512,000 shared forwarding entries; 1536 ingress and 1024 egress ACL entries
System Memory
32 GB, upgradeable to 64 GB, with 240 GB SSD
CPU
Intel Broadwell 4-core 2.4 GHz (Q model) or 8-core 2.0 GHz (O model)
Physical
3.43 x 17.3 x 24.7 in (8.76 x 44.0 x 62.7 cm) 2RU chassis
Power
3000 W HVAC/HVDC supplies in 1+1 hot-swap redundancy; typical 995 W, maximum 2270 W
Cooling
4 hot-swappable fans in 3+1 redundancy; 78.3 dBA at 50% fan speed
Environment
0 to 40 C operating, -40 to 70 C storage, 5-95% non-condensing humidity, up to 3000 m
AI Congestion Control
Dynamic Load Balancing, Priority Flow Control, ECN, WRED and intelligent mice-vs-elephant buffer management
Lossless RoCE
Full DCB support including ETS bandwidth reservation and DCBX exchange with endpoints
Multipath
128-way ECMP for Layer 3 fat-tree designs; virtual Port-Channel fabric peering
Software
Cisco NX-OS with VXLAN EVPN, MP-BGP EVPN, IPv4/IPv6 routing and three-tier BGP architectures
Automation
POAP day-0 provisioning, Ansible, REST API, YANG and OpenConfig via RESTCONF/NETCONF/gNMI, model-driven telemetry
App Hosting
Cisco Application Framework for third-party on-switch applications
Management
Cisco Nexus Dashboard Insights, Fabric Controller and Orchestrator with DCN tiered licensing
Overview
Cisco's entry into the 800G AI fabric is the Nexus 9364E family, built on its own Silicon One programmable ASICs. The N9364E-SG2 packs 64 ports of 800G into 2RU with 102.4 Tbps of switch bandwidth and a 256 MB fully shared on-die buffer, available with either OSFP or QSFP-DD optics so a fabric can standardise on either connector.
For AI/ML back-end networks the feature set matters as much as the port density. The platform supports the full lossless RoCE toolchain — Priority Flow Control, ECN, WRED, enhanced transmission selection and DCBX — plus Dynamic Load Balancing across equal-cost paths and buffer logic that treats large AI flows differently from small control traffic. A 3RU N9364E-SP2R variant on Silicon One P200 targets spine roles, and both run the single NX-OS image with POAP, OpenConfig and Nexus Dashboard automation.
Key Benefits
64 x 800G in 2RU with 102.4 Tbps of bandwidth reduces fabric tiers and cabling for GPU clusters. Lossless RoCE with DLB, PFC and ECN keeps RDMA traffic flowing under congestion. Single NX-OS image with OpenConfig, POAP and Nexus Dashboard fits existing Cisco automation and visibility tooling, and 1+1 power with 3+1 fans supports data centre service levels.
Applications
AI/ML back-end (east-west) GPU fabrics, 800G leaf-spine cores, high-density front-end aggregation, storage fabrics, and cloud-scale networks that need programmable 800G forwarding with lossless RoCE.
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